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from recipe.templatetags import register
from django.template.defaultfilters import stringfilter
@register.filter(name="format_ingredient_quantity")
@stringfilter
def format_ingredient_quantity(value):
fractions = {
0.125: '1/8',
0.25 : '1/4',
0.33 : '1/3',
0.50 : '1/2',
0.66 : '2/3',
0.75 : '3/4',
}
value = float(value)
remainder = round(value % 1, 2)
whole = int(value - remainder)
if whole <= 0:
whole = ""
else:
whole = str(whole)
if remainder <= 0:
remainder = ""
else:
remainder = fractions.get(remainder, str(remainder))
return "{0} {1}".format(whole, remainder)
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